Reinforced concrete dam.



- PATENTED MAR. 5, 1907'. H. L. 0013mm.

REINFORCED CONCRETE DAM.

APPLIGATION FILED MAY 2,1906."

1 m r E w m. u h E H A S I v 2 1 A r v 7 v a i110]! and adapted to No. Mama l'o all whom it may concern:

it known that l, HOWARD L. oBuRu, oi Boston, in the county of buh'olk and. State of h lassochusotts, have invonteo certain new and useful improvements in heinl'orceu Con oroiio Dams, o1 Whic 1 the following is a spec hoot-ion.

:1, body structure of oomrut-o; and it has loi its object to onolilo o QUIICIGiG dam to L0 built originally to o inininuiiii height and left in such condition that whilo it is prae'ti (Hilly o 'iorotive as a dam its height can ho roooily increased by adding to tho original concrete structure withoun the permanent ports thorooi. l

i To this and tho invention consists in tho iniprovon'ioots which i will now proceed to describe and .oloim.

Uf the accompanying drawings, port; of this specification, L a cross-soobion of a dam of "constructed in accordance igure 1 represents with my invonhe built upon or exto form a higher dam. higi 2 represents a View sinzilor to Fig. 1, showing the (lam completed by ailoitions to the structure shown. in big. 1. l ig. 3 rcpouts side or face View of tho (lam shown .2 looking from tho do'srustroain sioo oi the alum big. 4 roprosmus a viow of a .ioodiliootioi'i. v The some roi'oronoo i-loirziclei's indii-zito ,ho sa'ino parts in all tho figures,

.lioforring to lf'ig. 2, o roproswits Lho and I) thoapron, ol' :1 icinl'oriwl handed upwardly and provided witl l ('Hlli'li'llf'l vomprisos lho aml vo 'rvs ioiuling' o, as shown lll Fig.

l, tho uppor poi'lion of tho rioclnlho (r oily,

iho a iron, and the upper 7 portion ol tho hut-- .509 shown in Fig. 2

hazingomitlod- Tho altering any of forming 2 minimum height I A TE l5? FliQi- HQWARD L. COBURN, OF Bosro'o',

HEHNFDRCED fiOMGFiE Specification of Letters Patent. Application filed May 2, 1906; SP

limo :uluplvil to ho liuilt 'illlll ("oils 'ihih invention relates to o dam comprising temporary apron s.

l(l((l with ii ('0 lho said parts hoing coniieohril by tho (rest a: g

Patented March a, 190?. mil No. 314,847.

deck and huttressvs thus i'ornuul are nwnlod h a temporary apronstructure Wllll'l! may ho voinposml ol' planking soourod to llPdJilS or siringvlisf, ;-;uitahl yallixccl to the lhv upper o l yi of the (lock is proviil-oil with a lip or llauggo g, tilulvs iho ('YCsl'. 'lhohutitrosses an provided with liwrods i1, u'hh'h are omlzoliiis ol' the hut.- Iri'ssos iilkl project llHIOlIi lll lo a s'ullii'iont (Mont lo mahlo i'hrm to ho illlillUICll firmly in tho tom-rota \rhi'r'h is sulsoquemtly added to oxioud thrhuttrossow as shown in Fig.2. 'lho hullrossvs aro prolm'aiil forum! with angular or serrated Highs, ihv Tacos of which ('onslilvulv seats to origa zo Lu llross (.(lOl'lSiOlis r sol soquoull) apolioil, tho Foils hprojvciiing from said souls,:zlll1ougl1, ll dfSlTOQi tho lintlrvasvs as originally fornocl way have souls whiih are inclined or othorwiso fornrod, tho projor lin; from said seats, as shown in Fig. 4-.

The arrangement of tho ing seals or edges of the i that tho proiovting 7 are prolcclcd by ll supple 0xtonsionwngam mttressos is such orlions of tluyt'iorods 1o planking forming the The apron-s11ppoi'tiiig ionms or slring'vrsfaro proheri'ibly soourml to 'lho hullrvssco h l'mozms of bolh. i omhmhlod, in. the hull and P'K'Ujliflliljl through {he laws on Whh-h tho lmuus .iio smlorl.

'lho struwluroshown in ii 1 is :i Shir- 351.12 liiil :ilul opvralivo dam and in, tho some upon hy roinlorc-od and raised and proni'rvlo apron, as shown in Fig. Prior lo the raising of tho (loin the tou1- porary apron s and the si1p iorting-lwams f will he romovml, thus (XPUHlDQ' tho projoiling portions of tho il(-l(ill5 l. (om-role oxlonsions may now ho :uhhwl lo the hutlrossw onil to tho \l(5-ll{ lo raise 1 ho Join, the oomrolo iulood to tho huilro' (as living lirmlyanchored to ihe original portions oi {he huitrossvs by the rods h.

l claiml. A I'Olll'l'liC-(l :nlzuvtorl lo supporl won, pro ovlmg ow sziiil oxldnsion, and a. iwing'iorar forming :1 port of tho :lziizi i said projiwiiug mornliozs HllHl'iflHP illlilfj' ilolaihohh, iil'iiliiiliiihl A vonriimo (lain o m i '(is supporting ii voiu-rolo construction isinggo-ah lo uoiii f. i-ho (1oz buttresses having seats adapted to support 1 concrete extensions, and extension-engaging members projecting from the seats on the buttresses. l 3. A concrete dam comprising: a deck, buttresses supporting the deck, the said deck 1 and buttresses having seats adapted to engage concrete extensions, and a temporary apron detachably secured to the buttresses and covering the seats thereon. 4. A concrete dani comprising a deck, buttresses supporting the deck and provided with seats adapted to engage concrete-buttress extensions, and tie-rods embeddedin the buttresses and projecting from said seats to enter the. buttress extensions. 5. A concrete dam comprising a deck, buttresses supporting the deck and provided with seats adapted to engage concrete-buttress extensions, tie-rods embedded in the buttresses and projecting therefrom to enter the said buttress extensions, and a temporary apron detachably secured to the buttresses 1 an d covering the proj'ectingrods.

6. A concrete dam comprising a deck, buti tresses supporting the deck, and provided 1 with alternating pro ections and recesses, the

sides of which constitute seats adapted to en gage concrete-buttress extensions, and tierods embedded in the buttresses and rejecting from said seats to enter the sai extensions.

tresses supporting the deck, and provided with buttress-extension seats and with apron- 7. A concrete dam comprising a deck, butseats, bolts embedded in the buttresses and projecting from. the apron-seats, and a temporary apron having supporting-beams engaged with said bolts.

8. A concrete darn comprising a deck hav- 1n seat for a deck extension, buttresses supporting the deck and having buttress-extension seats and temporary apron-seats, and a temporary apron supported by said apron-seats and inclined downwardly from the said .deckextension seat.

In testimony whereof I have affixed my signature in presence of two Witnesses,

HoWARr L. COBUBN.

Witnesses FRANK W. KnLLoeo, TURNER Honenom.

e at its upper edge a lip or flange forming a- 

